Important Questions for CBSE Class 6 Science Chapter 10 - Fun with Magnets

Very Short Answer Questions:                                             1 Mark

1. Match the Following:

Ans: 1-b, 2-c, 3-d, 4-e, 5-a

2. State whether true or false. If false, correct the statement.

1. Like poles of a magnet always repel each other.
   Ans: True

2. Unlike poles of a magnet, they always repel each other.
   Ans: False. Unlike poles of a magnet attract each other.

3. A magnet can be used to magnetise a non-magnetic material.
   Ans: False. A magnet can be used to magnetise other magnetic material.

4. A bar magnet has equal magnetism all around its surface.
   Ans: False. A bar magnet has maximum magnetism at the poles and less at the centre of the body.

5. Magnetite is a rock with magnetic properties.
   Ans: True

Short Answer Questions:                                                                3 Marks

3. How can magnets be used to separate junk in a junkyard?

Ans: Materials such as iron, nickel, and cobalt, are attracted to magnets. Therefore, materials made of such magnetic substances can be separated in a junkyard by attracting them to a strong magnet. Hence, cranes with larger magnetic capacity are used in junkyards for separation of junk.

4. Differentiate between magnetic and non-magnetic material.

Ans: Difference between magnetic and non-magnetic materials is as follows:

5. How can a compass be used to find directions?

Ans: A freely hanging magnet will always fall to the ground in a north-south orientation. A compass is made out of a magnetised needle that may freely rotate. The compass needle will always point north-south when it comes to rest. The needle will always point in the same direction. A compass can thus be used to determine north and south.

6. Explain magnetisation.

Ans: Magnetisation is the process of creating an artificial magnet with the help of a magnet. Place a piece of iron bar on the table. Then move one of the magnet's poles carefully along the entire length of the iron bar. It's important not to lift the magnet halfway. During this process make sure to use the same pole of the magnet to slide along the iron bar in the same direction each time. This method is repeated 30-40 times until the iron rod becomes magnetised.

Phenomenon of Magnetisation

6. How can you make a compass in a cup?

Ans: Stepwise process of making a compass with a needle in a cup is as follows.

1. Fill the cup with water so that it is almost full.

2. Penetrate a cork or a piece of foam with this magnetised needle. 

3. This cork or foam is allowed to float in water as long as the magnetised needle does not come into contact with the water. 

4. Turn the cork. The needle will align itself in a north-south orientation when the cork stops revolving and continues to float without rotating.

Long Answer Questions:                                                              5 Marks

7. What care should be taken while handling magnets?

Ans: Magnets should be handled with caution to avoid losing their magnetic properties. The following are some precautions to take when handling the magnet:

1. Magnets should never be fired, hammered, or thrown from a great height.

2. Magnets should be stored in pairs, with opposite poles facing each other.

3. A piece of wood must be used to separate the magnets, with a piece of soft iron placed across their ends.

4. A piece of iron should be kept across the poles of a horse-shoe magnet.

5. We should keep magnets away from televisions, laptops, CDs, cassette tapes, mobile phones, and music systems.

Class 6 Science Fun with Magnets Important Questions

8. What Care needs to be taken while Handling the Magnets?

Ans: To prevent the magnets from losing their magnetism certain care needs to be taken. The precautionary measures are listed below:

• Magnets should not be dropped from a height, hammered, or heated.

• Magnets should be kept in pairs with their unlike poles facing the same side.

• A piece of iron should be stored together with a horseshoe magnet.

• Magnets should not be kept in a wood and a piece of soft iron needs to be kept at its end.

• Magnets should be kept away from computers, television, mobiles, music systems and other electronic gadgets.

9. How to make a Compass in a Cup?

Ans: An iron needle can be magnetised using a magnet. This magnetic needle is pierced through a piece of foam or a cork. This foam or cork is then made to float on the waters while taking precaution that the iron needle doesn’t touch the water. Now start rotating the foam or cork. When the foam or cork stops rotating and continues to float, the needle will align itself parallel to the north-south direction.

10. How can a Compass determine the Directions?

Ans: The NCERT Solutions for Class 6 Science Chapter 10 important questions give the proper explanation. A magnet that is suspended freely will always come to rest in the north-south direction. A compass comprising the magnetic needle is allowed to rotate freely. This needle will come to rest indicating the north-south direction. It will always point a direction which is regarded as the north. Thus one can easily locate the north, south along with east and west direction with the help of a magnetic needle.

11. How to Find the Magnetic Pole of the Earth?

Ans: This is one of the NCERT Class 6 Science Chapter 10 important questions. The magnetic pole of the earth is established in the following way:

• Earth comprises two geographic poles, the north and south poles.

• These are the Antarctic ( earth’s north pole) and Artic (earth’s south pole).

• Earth’s magnetic poles are located near each other but not exactly in the same place where the geographical poles are situated.

• A magnetic compass will always align itself to the earth’s north pole.

This helps to detect the magnetic pole of the earth.

Did You Know?

Electromagnets include a coil of wire encased around the metal core made from iron. When this material is exposed to an electric current, the magnetic field is produced making the material act as a magnet. The strength of the magnetic field can be controlled by regulating the electric current.

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Important Related Links for CBSE 6 Science

Conclusion

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